2. add method to determine if manager has been shutdown (44680) 3. Add nsCOMPtr to avoid leak (44680, 43244) r=valeski@netscape.com git-svn-id: svn://10.0.0.236/trunk@75719 18797224-902f-48f8-a5cc-f745e15eee43
2. add method to determine if manager has been shutdown (44680) 3. Add nsCOMPtr to avoid leak (44680, 43244) r=valeski@netscape.com git-svn-id: svn://10.0.0.236/trunk@75719 18797224-902f-48f8-a5cc-f745e15eee43